Endemic Mimosa species, forming resource islands or not, and rainfall seasonality jointly influence arbuscular mycorrhizal fungi communities in a semiarid ecosystem of Mexico

Autor: Noé Manuel Montaño, Sara Lucía Camargo-Ricalde, Eduardo Chimal-Sánchez, Rosalva García-Sánchez, Laura Verónica Hernández Cuevas
Rok vydání: 2021
Předmět:
Zdroj: Trees. 36:609-625
ISSN: 1432-2285
0931-1890
DOI: 10.1007/s00468-021-02234-4
Popis: Woody Mimosa species, forming resource islands or not, affected the structure of mycorrhizal communities and increased soil fertility, being thus priority targets for conservation and reclamation of edaphic functions. In arid and semiarid ecosystems woody plants forming resource islands (RIs) contribute to improve soil fertility; however, its effect on arbuscular mycorrhizal fungi (AMF) communities is little known. The objectives of this study were to: (1) characterize the AMF communities and their mycorrhizal potential in soil associated to four woody species of Mimosa, three that are RIs-forming (M. lacerata, M. luisana and M. polyantha) and one that is not (M. purpusii-NRIs) compared to open areas (OAs) without plants; and (2) determine the relationship between AMF and soil properties in two seasons (rainy and dry) in the semiarid Tehuacan–Cuicatlan Valley (TCV), Puebla and Oaxaca, Mexico. All Mimosa species favoured AMF richness and spore abundance and altered AMF composition, but to varying degrees depending on the Mimosa species. The three Mimosa species forming RIs and M. purpusii-NRIs improved soil conditions and resources to a similar extent as compared to OAs changing thus AMF species composition; however, only the RIs of M. luisana and M. polyantha did promote AMF diversity under conditions of greater disturbance in the vegetation structure. In contrast, these Mimosa species did not increase mycorrhizal inoculum potential compared to OAs. In addition, the rainfall seasonality affected the fungal community mostly in M. luisana-RI and M. polyantha-RI than in M. lacerata-RI and M. purpusii-NRI. In conclusion, these four Mimosa species, RIs-forming or not, affected AMF communities and soil fertility, being thus priority targets for conservation and reclamation of edaphic functions that perform these fungi within semiarid TCV, so the biology of these woody plants and their symbionts must be better documented.
Databáze: OpenAIRE
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